On Wednesday, an Iranian student group comprised of programmers and hackers, known as the Cyber Warriors Team, claimed to have compromised the SSL cert used on the NASA Solicitation and Proposal Integrated Review and Evaluation System (NSPIRES) website.

If the claims are true, this wouldn’t be the first time the space agency has had security issues. In March, NASA Inspector General Paul K. Martin told the House’s Committee on Science, Space, and Technology’s Subcommittee on Investigations and Oversight, that the agency faces serious challenges when it comes to protecting its information and systems from cyber attacks, and that at one point, attackers had full functional control over NASA networks.